It's a simple problem, but I just want to do it so you get used to working with vectors.
这是个简单的问题,但我还是想做一下好让你们习惯矢量运算
And I want you to get used to this, that colon is important, it identifies the start, and then the set of indented things identify all the things at the same level, and when we reset back to the previous level, that's when we go back to where we were.
我希望大家熟悉这个结构,冒号很重要,它定义了开始的地方,然后缩进号代表着,同样一层的对象,当我们到了,不缩进的地方的时候,也就到了以前的状态。
When you get a bagel, it used to be you'd get something this size, and now you get something that's really, really much bigger.
百吉饼,过去人们吃的是冰球大小的,而现在已经比过去大了非常多
It's just--It's--You get used to things.
这是因为你对这些事情已经习惯了。
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